Quantum Monte Carlo study of fluctuating charge stripes in high-Tc superconductors

Abstract The charge stripe in high- T c superconductors is studied within an effective model of the stripe fluctuating in an antiferromagnetic background by means of the quantum Monte Carlo method. We investigate the correlation between the charge and spin orderings by direct calculation of the order parameters. A hidden spin long-range order is governed by a competition between the two trends caused by increasing hole mobility: the enhancement of the spin–spin correlation mediated by hole motions and the reformation of a strong stripe order.